Bezel Width Reduction via Backlight Housing Integration
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Solution Overview
Problem
Conventional liquid crystal display devices face limitations in reducing the size or width of the bezel due to the size difference between the liquid crystal panel and the backlight unit, as the backlight unit is typically larger, restricting the minimization of the bezel's thickness.
Innovation Solution
The solution involves a backlight unit with a light source holder, a light guide plate, and optical sheets, where the liquid crystal panel is fixed to the backlight unit using an adhesive material, allowing the backlight unit's front surface width to be equal to or smaller than the liquid crystal panel's front surface width, and incorporating a bezel along the edge of the liquid crystal panel to minimize bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the backlight unit is made larger to accommodate conventional assembly structures, then the assembly stability is improved, but the bezel width increases
Solution Approach 1:
The patent merges the backlight unit and panel guide into a single integrated structure. The backlight unit includes a backlight housing that directly receives and positions the liquid crystal panel, eliminating the need for a separate panel guide. This integration allows the backlight unit to be made smaller while maintaining assembly stability, as the housing itself provides the structural support and positioning functions previously requiring separate components.
Solution Approach 2:
The patent extracts and eliminates the separate panel guide component from the assembly. By removing this unnecessary intermediate structure, the backlight unit can be reduced in size while still providing stable panel mounting through its integrated housing design. The housing includes direct mounting structures that replace the function of the eliminated panel guide.
2Stability of the object's composition
If additional structural components like panel guides are used to stabilize assembly, then the assembly stability is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into the backlight unit housing: light emission, structural support, panel positioning, and panel mounting. This multi-functional integration eliminates the need for separate panel guides and other intermediate components, reducing assembly structure complexity while maintaining stability through the housing's integrated design.
3Length of stationary object
If the backlight unit size is reduced to minimize bezel width, then the bezel width is reduced, but the assembly stability deteriorates
Solution Approach 1:
The patent applies local quality by concentrating structural reinforcement at critical locations within the compact backlight unit housing. The housing includes specifically designed mounting structures, ribs, and attachment points at key positions to provide localized structural support and stability, allowing the overall unit to be small while maintaining assembly stability through strategically placed structural features.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables a bezel width of 1.0 mm or less, reducing manufacturing costs and enhancing assembly efficiency by allowing the backlight unit's size to be smaller than the liquid crystal panel, eliminating the need for additional structural components like panel guides.
Implementation Method 1
a liquid crystal panel arranged at a front side of the backlight unit and fixed to the backlight unit by an adhesive material
Implementation Method 2
a light guide plate for receiving light from each of the light sources at a light incidence surface formed at a side surface of the light guide plate, and emitting the light after changing a travel direction of the light toward a front surface of the light guide plate
Implementation Method 3
a light guide plate for receiving light from each of the light sources at a light incidence surface formed at a side surface of the light guide plate, and emitting the light after changing a travel direction of the light toward a front surface of the light guide plate
Implementation Method 4
a plurality of optical sheets disposed on the light guide plate, to emit light received from the light guide plate and light received at light incidence surfaces formed at side surfaces of the optical sheets in a direction perpendicular to the light incidence surfaces of the optical sheets
Implementation Method 5
a reflection sheet formed on an inner bottom surface of the bottom cover, to reflect the light from the light guide plate
Data Source
AI summary
Discussed are a liquid crystal display device and an assembly method thereof, which are capable of reducing, as much as possible, the width of a bezel defining an outer appearance of the liquid crystal display device through variation of an assembly structure of a liquid crystal panel and a backlight unit and variation in the size of the backlight unit. The liquid crystal display device can include a backlight unit including a plurality of light sources, a light source holder, and a light guide plate, and a liquid crystal panel arranged at a front side of the backlight unit and fixed to the backlight unit by an adhesive material.